Created attachment 116901 [details]
Error dialog appearing

SUMMARY


STEPS TO REPRODUCE
1. Open Krita, open an image. Choose "Filter / Start G'MIC-Qt".
2. Select filter 'Artistic / Stylize' (If not already available, update filters by pressing the 'Update filters' button). Choose one of the pre-defined style (not "Custom"), and press the "Apply" button.
3. The filter is working well until it returns. An error message appear, and the outcome is not transferred back from the G'MIC-Qt plug-in to Krita.

OBSERVED RESULT

Here is the full log on the console window:

dtschump@elara:~/Downloads$ ./krita-4.1.7-x86_64.appimage 
QLayout: Attempting to add QLayout "" to QWidget "", which already has a layout
/tmp/.mount_krita-FWHZ65/usr/lib/krita-python-libs/krita added to PYTHONPATH
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Regular")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Bold")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Regular")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Regular")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Regular")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Light")
krita.general: Could not find font QVariant(QString, "Source Sans Pro") with style QVariant(QString, "Regular")
>>> true QUrl("file:///home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora") "file:///home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora" "/home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora"
>>> true QUrl("file:///home/dtschump/work/img/portraits/portrait24.jpg") "file:///home/dtschump/work/img/portraits/portrait24.jpg" "/home/dtschump/work/img/portraits/portrait24.jpg"
>>> true QUrl("file:///home/dtschump/work/img/fish.jpg") "file:///home/dtschump/work/img/fish.jpg" "/home/dtschump/work/img/fish.jpg"
>>> true QUrl("file:///home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora") "file:///home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora" "/home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora"
>>> true QUrl("file:///home/dtschump/work/img/portraits/portrait24.jpg") "file:///home/dtschump/work/img/portraits/portrait24.jpg" "/home/dtschump/work/img/portraits/portrait24.jpg"
>>> true QUrl("file:///home/dtschump/work/img/fish.jpg") "file:///home/dtschump/work/img/fish.jpg" "/home/dtschump/work/img/fish.jpg"
>>> true QUrl("file:///home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora") "file:///home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora" "/home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora"
>>> true QUrl("file:///home/dtschump/work/img/fish.jpg") "file:///home/dtschump/work/img/fish.jpg" "/home/dtschump/work/img/fish.jpg"
>>> true QUrl("file:///home/dtschump/work/img/portraits/portrait24.jpg") "file:///home/dtschump/work/img/portraits/portrait24.jpg" "/home/dtschump/work/img/portraits/portrait24.jpg"
>>> true QUrl("file:///home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora") "file:///home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora" "/home/dtschump/work/src/gmic/html/img/gmicky_deevad.ora"
>>> true QUrl("file:///home/dtschump/work/img/fish.jpg") "file:///home/dtschump/work/img/fish.jpg" "/home/dtschump/work/img/fish.jpg"
>>> true QUrl("file:///home/dtschump/work/img/portraits/portrait24.jpg") "file:///home/dtschump/work/img/portraits/portrait24.jpg" "/home/dtschump/work/img/portraits/portrait24.jpg"
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/opacity-decrease
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/opacity-increase
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/lightness-increase
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/lightness-decrease
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/zoom-in
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/rotate-canvas-left
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/rotation-reset
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/rotate-canvas-right
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/zoom-out
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/brushsize-decrease
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/brushsize-increase
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/preset-switcher
file:///tmp/.mount_krita-FWHZ65/usr/lib/qml/org/krita/sketch/components/Button.qml:84:9: QML Image: Failed to get image from provider: image://icon/edit-clear
krita.lib.flake: "InteractionTool" : action "object_order_raise" conflicts with canvas action "rotate_canvas_right" shortcut: "Ctrl+]"
krita.lib.flake: "InteractionTool" : action "object_order_lower" conflicts with canvas action "rotate_canvas_left" shortcut: "Ctrl+["
krita.lib.flake: "InteractionTool" : action "object_order_raise" conflicts with canvas action "rotate_canvas_right" shortcut: "Ctrl+]"
krita.lib.flake: "InteractionTool" : action "object_order_lower" conflicts with canvas action "rotate_canvas_left" shortcut: "Ctrl+["
QObject::connect: No such signal KisViewManager::destroyed(QObject *o)
gmic-qt: socket Key: "{00dbfc05-615b-4768-948b-8830fea995ce}"
QObject::startTimer: Timers cannot have negative intervals

[gmic_krita_qt]./preview/ v -99 fx_stylize_preview 0,4,0,1,0.5,2,3,0.5,0.1,2,5,0,0.7,100,0,1,0,5,5,7,1,30,1000,2,0

[gmic_krita_qt]./preview/ v -99 fx_stylize_preview 15,4,0,1,0.5,2,3,0.5,0.1,2,5,0,0.7,100,0,1,0,5,5,7,1,30,1000,2,0

[gmic_krita_qt]./apply/ v -99 fx_stylize 15,4,0,1,0.5,2,3,0.5,0.1,2,5,0,0.7,100,0,1,0,5,5,7,1,30,1000,2,0
SAFE ASSERT (krita): "parts.size() == 5" in file /home/appimage/workspace/Krita_Release_Appimage_Build/krita/plugins/extensions/qmic/QMic.cpp, line 340
Aborted (core dumped)

EXPECTED RESULT

Filter returns its result as a modified image in Krita.


SOFTWARE/OS VERSIONS
Windows: 
MacOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

Using the latest Linux64bits AppImage downloaded from the Krita website (v. 4.1.7). Attached is the screenshot of the error dialog that appears when the Stylize filter returns.